Yes, #231 is much better, although I'm not sure if the letters are all aligned (even and level). Looks like the ct in eXact is higher than the rest, but if may be just an optical "error" due to its small size on screen.
I like #230, but not as a website header... I could always use that look for a hat or something?
Entry #228 is good too, I'll have to get opinions on which people like better, but I think it'll be #231.
Try a version of #231 with the symbol being smaller. Maybe 1/3 smaller?